Senior System Administrator (Onsite)

Date Posted:

2025-08-19

Country:

United States of America

Location:

HVA34: Sterling, VA 22640 Davis Dr , Sterling, VA, 20164-7104 USA

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance:

DoD Clearance: Secret

This is a great opportunity for job seekers with experience in Classified IT Systems Administration and the defense industry to join our Collins Aerospace team. This is within the Simulation Training and Solutions (STS) business area. STS develops and builds simulators and training systems for both military and commercial customers. Devices range in complexity from desktop training all the way up to high fidelity weapon system and full-flight training systems including full visual, motion, and simulator interoperability (HLA/DIS). We’re looking for talented professionals ready to make an impact in a dynamic and mission-driven environment.

**This position is onsite in Sterling, VA**

What YOU will do:

• Collaborate with partners to define computing requirements and create end-to-end solutions consisting of hardware and operating system technologies.

• Integrate and partner with programs to solve complex infrastructure problems.

• Assure a high level of reliability and performance through systems monitoring and infrastructure management.

• Ensure server and application compliance with security and performance requirements (DFARS, RMF, NIST Cybersecurity Framework).

• Install, Convert, and upgrade systems.

• Develop, revise, and maintain technical and operational documentation (including procedures) to continually improve our computing environment.

• Assist in developing the overall performance and capability of your technical team through mentoring and knowledge sharing.

• Ensuring that all the Information Assurance (IA) software security patches and version and virus signature file updates are up to date.

• Maintenance of system and data security processes and applications such as virus scanning, auditing, collection of audit logs, system scripts and data collections scripts.

• Assisting in development and updating system administration procedures.

• Supporting Disaster Recovery and incident response exercises as required.

• Updating network diagrams following integration of approved system configuration changes.

• Please note that an active U.S. Dept. of Defense (DoD) Top Secret Security Clearance is required as of day one of employment.

Qualifications YOU Must Have:

• Typically requires a University Degree and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience.

• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance 

• Must possess an active US DoD Secret Security Clearance (DOD).

• 4+ years total experience in administration of Windows operating systems, including Windows 11, 10, Server 2016, 2019, 2022.

• Red Hat knowledge.

• 4+ years total professional experience working in IT.

• Strong knowledge of Active Directory and Group Policy.

• Security+ certification (DoD 8570 IAT2 or higher).

• Strong troubleshooting skill.

Qualifications We Prefer:

• RMF (Risk Management Framework) knowledge

• SAP (Special Access Program) experience

• SIPRNet (Secret Internet Protocol Routing Network) experience

• STIG (Security Technical Implementation Guide) experience

• SCAP (Security Content Automation Protocol) experience

• VMWare / vSphere / ESXi experience

• Tenable / Nessus experience

• McAfee / HBSS

• Symantec knowledge

• Networking / Cisco / TCPIP / OSI knowledge

What We Offer:

Some of our competitive benefits packages include:

• Medical, dental, and vision insurance.

• Three weeks of vacation for newly hired employees.

• Generous 401(k) plan that includes employer matching funds and separate. employer retirement contribution, including a Lifetime Income Strategy option.

• Tuition reimbursement program.

• Student Loan Repayment Program.

• Life insurance and disability cov